Advice: Air Filters

Should I do this service when it's recommended?

Yes.

Why do I have to do this?

Because, eventually, your air filter will get plugged up.

What happens if I don't do this?

If your air filter gets too dirty or clogged, your engine won't be able to suck enough air into the combustion chambers. The engine will then run rich (i.e., too much gas and not enough air). When this happens, your car will lose power and run roughly. Your Check Engine light also may come on.

If you really neglect the air filter for a long time, your car may stop running altogether. While permanent damage is unlikely, it is possible. If an air filter were sufficiently dirty and damaged, it could allow harmful, abrasive contaminants into the combustion chamber.

Is there any maintenance required between intervals?

If you operate your car under severe duty, such as frequent driving on dirt roads or a lot of stop-and-go driving around town, then you should halve the recommended service intervals for the inspection and replacement of the air filter.

Car Talk Tip: Inspecting and replacing your air filter is an easy task. Almost anyone can do it ... with the possible exception of Jerry Springer. By purchasing the filter directly from an auto parts store, you can sometimes save $10 or more, in addition to the labor costs.